Tool



rd Morris Show a,

EDWARD MORRIS, 0F OAKLAND, CALIFORNIA.

TOOL.

Specification of Letters Patent.

Patented J an. 6, 1920.

Application filed December 4, 1918. Serial No. 265,271.

To all whom it may concern Be it known that I, EDWARD MonRis, a citizenof the United States, residing at Oakland, in the county of Alameda andState of California, have invented new and useful Improvements in Tools,of which the following is a specification.

This invention has reference to improvements in tools and the principalobject of the invention is to provide a combined reamer and countersinkmore particularly adapted for truing the rivet holes of ship plates andthe like.

Another object of the invention is to make the countersink toolremovable so the same can be sharpened, with improved means for holdingthe same in position.

The invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail, ref erence will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a view of the complete tool;

Fig. 2 is a view of the countersink;

Fig. 3 is a. part longitudinal section;

Fig. 4 is a cross section on line L-i of Fig. 3.

Fig. 5 is a view of a modification.

In these views 1 indicates the reamer which consists of the shank 2 andthe drill part 3. This drill part may be made in any desired way andforms no part of my invention. The shank 2 is provided with. anelongated slot 4, the lower end of which is a slight distance above thedrill part. The end wall of this part of the slot is of invertedV-shape, as indicated at 5, for a purpose to be hereinafter described.The countersink tool 6 is of substantially V-shape with its edgesbeveled in opposite directions to provide cutting edges and the facesslotted as at 7 adjacent said edges to facilitate the cutting action.The small or lower end of the tool 6 is provided with a substantiallyV-shaped recess 8, but one part of the V is flattened somewhat so thatit may be passed over the V-shaped wall at the lower end of the slot. Inthis way the countersink tool may be passed into the slot but cannot bepassed entirely therethrough owing to the unfiattened wall engaging withthe bottom of the recess and thus preventing further movement of thetool. The tool is held within the slot by the key 9 engaging the spacebetween the upper end of the slot and the top of the tool. If desired Imay pass the key through the hole 10 passing through the shank at rightangles to the slot 4. In this case the key will engage a slot 10 in thetop of the tool.

In the modification shown in Fig. 5 the tool is held in place by a ring12 engaging the slots 13 in the top of the tool. The ring is engaged bya lock nut 14: screwed on the shank.

It will thus be seen that after the hole has been enlarged by the reamerthe countersink tool coming in contact with the plate will countersinkthe same. It will also be seen that the countersink tool may be removedso that the same may be sharpened or replaced by a new one.

As before stated my invention is mainly useful for the enlarging of theholes in ship plates; The rivet holes are punched in the plates in theshop and when the plates are placed together the holes seldom registerso that it is necessary to ream out the holes be fore the rivet can beput in place. These holes are'then countersunk so as to provide a headon the rivet. By my tool the plates are reamed and countersunk at thesame time and by the same tool.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope of the appended claim.

Having described the invention, what I claim is 1 A tool of the classdescribed comprising a reamer having a slot in its shank, the lower endof said slot having an inverted tilted V- shaped wall, a countersinktoolengaging in said slot and having a recess in its lower end shaped to fitso that it will pass over the V- shaped wall and a key for holding thetool in said slot.

In testimony whereof I affix my signature.

EDWARD MORRIS.

